Attachment for estension-tables.



UNITED v srATiais PATENT oFFicE.

'HIRAM c KRrEGHBAUM, oF soUrH BEND, INDIANA, AssicNoR `To 'EMIL TYDEN, OF HASTINGS, MICHIGAN. ATTACHMENTv Fon EXTENSION-MTAB'LES.

To all whom t may concern:

`ments for Extension-Tables and I do hereby 'declare the following to'beV a full, clear, and eXact description of the invention, such as. Ywill enable others skilled in the art to which it a pertains to Vmake and use the same, A

Tlliis invention relates to an attachment for extension-tables, and more especially to those tables having a centrally vertically divided pedestal to inclose a central supporting-leg when the table isclosed up. In tables of this character the pedestal after continued use spreads 'apart 'toward its bottom evenl though the table-top isl close together, such spreading being due to the tendency of the Atable to sag at the center by the weight resting upon'the oEset feet, and the central 'supporting-leg, which is always madeslightly shorter, is permitted to engage the floor with the rsame degree of pressure as the pedestal-` feet and drag unnecessarily over the iloorl when'the table is extended.

' i Thev object of the present invention is tol obviate these objectionable features by providing a means for locking and binding the@ pedestal parts together, so that'a close joint `will be effected throughout the' entirelength of the pedestal.

A further object is to conceal the locking and binding means Within the-hollowv pedestal and to provide an operating mechanism which locks and binds the pedestal arts by a single operation when the table brought together.

tion, and operative-aggroupment of elements,

all as will be more fully described hereinafter,

respective positions of myl attachment when Speciicaton of Letters Patent. Application iiled March 16, 1903. Serial No. 147,970'I together, the joint extending longitudinally bearing for the slot when the cross-head end as been With these objects in view the invention conslsts 1n the novel constructlon, combina- I Patented March 13, 1906.

`the pedestal parts are connected and disconnected therewith. i

Making renewed reference to the drawings,

l1 1 represent the two parts ofthe table-top,

each having' a part yof the divided pedestal connected thereto, as shown at 2 and 3, Vand on these pedestal parts, at the bases thereof, are arranged the wide-spread feet 4 and 5. These pedestals are usually rectangular in cross-section when the two parts are brought at two of the opposite corners; but lthe attachment is alsoapplicable to cylindrical or other shaped pedestals, and the central leg 6 is inclosed by the two parts 2 and 3 when the tableY is closed.

The means for locking and binding the two pedestal parts together is mounted on the in-y side of the parts and comprises a verticallymovable and oscillatory hooked member 7, which extends through a slot 8 in the central supporting-leg and is formed at its free end with an angular extension 9, adapted to engage an e e or keeper 10, secured to the opposite pe estal part. This hooked member 7 is formed at one end with a cross-head 11, having a curved slot 12, in which an antifriction-roller 13 mounted between the ears 14, is disposed to provide a fulcrum for the hooked member when it is oscillated and a of the member is moved vertically to bind the pedestal parts together, as will be more fully described hereinafter. The slot 12 is arranged at such an angle as to provide a cam action for the hook when it is `moved up or down on the roller 13, the'distance between the angular extension 9 of the hook and the upper end of the slot being greater than the distance between such angular extension and the lower end of the slot, so that the slot is disposed eccentrically to the shank portion, and upon an upward movement of the crosshead end the roller will vbind in the slot, gradually decrease'the distance between the roller and the freeangular end 9, and draw the .pedestal parts close together. c

The lmeans for operating the hooked memf ber consists of a rod 15, extending vertically within the pedestal part 2 and secured .at its lower end to the top and outer edge of the cross-head and at its upper end to one arm of a kbell-crank lever 1 6, pivoted 'beneath the. tajblefto-p. To the other arm of Athe;bell-crank l IOO lever is connected a rod or link 17, 'which is pivoted to an operating-l ever 1S, located near the edge ofthe table-top and concealed within the space inclosed by the depending panels of the top.

Referring to Fig. 2 of the drawings, it is premised that the table has been closed together and the hooked member 7 in the position shown in full lines with the cross-head end lowered to tilt the shank portion upwardly out of the horizontal plane of the keeper 10. Now upon pulling the operating-lever 18 toward the edge of the table-top the link 17 and rod 15 will be reciprocated and the upward movement of the last will raise the cross-head end of the hooked member. This initial movement of the crosshead end will cause the hooked member to be oscillated by virtue of the roller 13, which acts as a fulcrum in the slot 12, and the angular bent end 9 now being engaged with the keeper 10 the pedestal parts are locked together. Upon a Jfurther pull of the operating-lever it is brought to the position shown in Fig. 1 and the cross head end of the hooked member is moved upward to the position shown in dotted lines in Fig. 2. During this latter movementv the antifrictionroller 13 impinges against the outer Jface of the slot 12 and the binding action emanating from the downward and inwardly curved slot draws the pedestal parts irmly together throughout their entire length. When the table is to be extended, a reverse movement of the operating-lever 18 will iirst release the hooked member from its binding engagement on the roller and keeper, and when the roller has reached a position near the upper end of the slot it serves as a ulcrum for the hooked member, which is tilted to be disengaged from the keeper.

What I claim, and desire to secure by Letters Patent, is-

1. In a edestal extension-table, in combination wit the table members and the pedestal members pertaining thereto respectively, meansfor connecting and drawing the edestal members together comprising a ed element on one member and a movable element on the other member, both located within the pedestal at a substantial distance from both ends thereof, the movable element having an up-and-down sliding connection with the memberon which it is mounted, the engagement of said sliding element with one of the members being effected by a surface on one of the parts engaged which is oblique to the parting plane of the two members, and operating connections from said movable element extending to the top of the pedestal.

2. In a pedestal extension-table, in combination with the separable members of the table and the pedestal members pertaining thereto respectively, means for connecting and drawing the pedestal members together comprising a iixed element on one member; an elemen t mounted for sliding movement on the other member, both being within the pedestal; means for guiding the sliding element obliquely to the parting plane of the pedestal members, and operating connections for said sliding element extending to the top of the pedestal.

3. In a pedestal extension-table, in combination with the separable table members and the pedestal members pertaining thereto respectively, an element pivoted on one of the pedestal members having a sliding connection with its pivot, and having its free end formed to engage the other pedestal member for connecting the members together, the other pedestal member having an element for such engagement, means Jfor guiding said pivoted element in its sliding movement adapted to guide it obliquely with respect to the parting plane of the pedestal members, and operating connections Jfor said element extending to the top of the pedestal.

4. In a pedestal extension-table, the com bination with a vertically-divided pedestal of means for locking and binding the pedestal parts together comprising a iixed member on one part and a movable member onl the other part, said movable member having a sliding pivotal connection with the part to which it pertains, and means for operating on said movable member to engage it with the iiXed member and bind the parts together.

5. In a pedestal extension-table, the combination with a vertically-divided pedestal of means for locking and binding the pedestal parts together comprising a member on each part, one of said members having a sliding iulcrumed connection with the part to which it pertains to adapt it to be tilted to engage with the other member and slide upon its fulcruin to bind the pedestal parts together.

6. In a pedestal extension-table, the combination with a vertically-divided pedestal, of means Jfor locking and binding the pedestal parts together comprising aiixed member on one of said pedestal parts and a movable member on the otherv part adapted to be engaged with the xed member after the pedestal parts have been brought together; a sliding connection between the movable member and the part to which it pertains, and means whereby the movable element is given a movement eccentric to the fixed member after the former has become engaged with the latter.

7. In combination with a vertically-divided pedestal of an extension-table, a ixed member on one of the pedestal parts and a movable member on the other pedestal part adapted to engage the iixed member, said movable member comprising a shank portion having a cross-head provided with a slot disposed eccentrically to the shank portion, a fulcrum on the pedestal part to whiclrthe rfi-imatw j WIM-.i i.. i.

IOO

IIO

movable member pertains'and adapted to act Y as abearing. in the slot When the cross-head isv moved thereon, and means connected to the cross-head to operate onthe movable member to bind the pedestal parts together.

8. In a edestal extension-table, the oombination Wlth the vertically-divided pedestal, of means for looking and binding the pedestal parts together comprising a xed member on one of the pedestal parts, a movable member on the other pedestal part having a shank ortion at one end to en age the fixed member and provided at its ot er end With a crosshead formed With a slot, the slot being disposed ecoentrioally to the vshank portion, an antifriction-roller yarranged Within the slot and adapted to act as a fulorum for the movable member when that element is rocked and a bearing for the slot When the crosshead end is moved thereon, and means oonneoted to the cross-head to operate the movable member.

In testimony whereof I affix my signature in presence of tWo Witnesses. v

HIRAM C. KRIEGHBAUM. Witnesses:

GEORGE OLTsoH, MAGGIE OLTsoH. 

